From 64e851cd773bdfd55fe5858d72564bf058598e1f Mon Sep 17 00:00:00 2001
From: kageru <kageru@encode.moe>
Date: Tue, 21 Dec 2021 00:20:34 +0100
Subject: [PATCH] Add test for day 20

---
 2021/src/bin/day20.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/2021/src/bin/day20.rs b/2021/src/bin/day20.rs
index be4aa91..6d447a2 100644
--- a/2021/src/bin/day20.rs
+++ b/2021/src/bin/day20.rs
@@ -95,6 +95,14 @@ mod tests {
     use super::*;
     use aoc2021::*;
 
+    const TEST_INPUT: &str = "#.#.#..#####.#.#.#.###.##.....###.##.#..###.####..#####..#....#..#..##..###..######.###...####..#..#####..##..#.#####...##.#.#..#.##..#.#......#.###.######.###.####...#.##.##..#..#..#####.....#.#....###..#.##......#.....#..#..#..##..#...##.######.####.####.#.#...#.......#..#.#.#...####.##.#......#..#...##.#.##..#...##.#.##..###.#......#.#.......#.#.#.####.###.##...#.....####.#..#..#.##.#....##..#.####....##...##..#...#......#.#.......#.......##..####..#...#.#.#...##..#.#..###..#####........#..####......#...
+
+#..#.
+#....
+##..#
+..#..
+..###";
+
     #[test]
     fn lookup_index_test() {
         let grid = HashGrid::from_bytes_2d("...\n#..\n.#.", Pixel::from);
@@ -103,7 +111,7 @@ mod tests {
         assert_eq!(idx, 34);
     }
 
-    // Can’t meaningfully test because test and real behaves completely differently toward infinity
+    test!(part1() == 24);
     bench!(part1() == 5503);
     bench!(part2() == 19156);
     bench_input!(|(_, g): &Parsed| g.len() => 10_000);